IOS: CGRect is right, but UIImage flipped - ios

Question

I know i have to translate the coordinate system, when drawing. The thing is that when i use:
CGContextTranslateCTM(_context, 0.0, _size.height);
CGContextScaleCTM(_context, 1.0, -1.0);
My rect of the image is flipped, and the image is 'non-flipped', if i dont use the above my image is flipped, and the rect is non-flipped.
Here's my code:
CGRectMake(60, 100, image.size.width, image.size.height);
CGContextSaveGState(_context);
UIGraphicsBeginImageContext(image.size);
CGContextClearRect(_context, placeholderRect);
CGContextDrawImage(_context, placeholderRect, image.CGImage);
UIGraphicsEndImageContext();
CGContextRestoreGState(_context);
How do i maintain my rect (non-flipped), while the image is flipped?
Thanks

Answer 1

Instead of using CGContextDrawImage use [image drawAtPoint:CGPointMake(0,0)];

Answer 2

The trick may lie in this UIImage method
+ (UIImage *)imageWithCGImage:(CGImageRef)imageRef scale:(CGFloat)scale orientation:(UIImageOrientation)orientation
Where orientation is one of these :)
typedef enum {
UIImageOrientationUp,
UIImageOrientationDown, // 180 deg rotation
UIImageOrientationLeft, // 90 deg CCW
UIImageOrientationRight, // 90 deg CW
UIImageOrientationUpMirrored, // as above but image mirrored along other axis. horizontal flip
UIImageOrientationDownMirrored, // horizontal flip
UIImageOrientationLeftMirrored, // vertical flip
UIImageOrientationRightMirrored, // vertical flip
} UIImageOrientation;
Edit: Update
I just did this simple code sample in a UIView subclass overriding drawrect and it worked perfectly. It doesn't use the UIImage method but works all the same.
UIImage *image = [UIImage imageNamed:#"image.png"];
CGContextRef _context = UIGraphicsGetCurrentContext();
CGContextSaveGState(_context);
CGContextDrawImage(_context, CGRectMake(100, 20, image.size.width, image.size.height), image.CGImage);
CGContextScaleCTM(_context, -1.0f, 1.0f);
CGContextDrawImage(_context, CGRectMake(-300, 20, image.size.width, image.size.height), image.CGImage);
CGContextRestoreGState(_context);